Dr. Joshua M. Kosowsky, MD

  • Boston, MA
  • Emergency medicine physician
NPI1124085444PAC ID5890983936
Medicare services, 2024
799
Medicare patients, 2024
752
Part D claims, 2024
137
Publications
30
Hospital affiliations
3
Practice address
75 Francis Street, Boston, MA 02115
Practice phone
Call (617) 732-5500
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Brigham and Women's Hospital

Hospital · Boston, Massachusetts

See all 7 affiliations

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Dr. Joshua M. Kosowsky is an emergency medicine physician in Boston, Massachusetts

Dr. Kosowsky practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.

Dr. Kosowsky's NPI, 1124085444, was assigned on April 28, 2006. Dr. Kosowsky graduated from Harvard Medical School in 1996. Dr. Kosowsky holds Massachusetts license 204608.

NPI and contact details
Medicare PAC ID
5890983936
NPI enumeration date
April 28, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(617) 732-5500
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
56
Medical school graduation
1996

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Joshua M. Kosowsky practices at Brigham and Women's Hospital in Boston, Massachusetts

Dr. Kosowsky's primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.

Source: Dmand AI Affiliation Data

Dr. Joshua M. Kosowsky is affiliated with 4 sites of care and 3 medical groups

Dr. Kosowsky's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Kosowsky is also affiliated with Dana-Farber Cancer Institute. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Kosowsky to 1 more hospital, 2 medical groups and 1 hospital outpatient department, each named with a free account.

See all 7 affiliations for Dr. Kosowsky

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Joshua M. Kosowsky's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kosowsky practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Brigham and Women's HospitalAvailable with a free account
+3 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Joshua M. Kosowsky is one of 1,483 emergency medicine physicians in Massachusetts

Emergency medicine is Dr. Kosowsky's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Kosowsky is licensed in Massachusetts.

Specialties and state licenses

  • Emergency medicine, MassachusettsPrimaryLicense 204608 · taxonomy 207P00000X

Emergency medicine physicians near Dr. Kosowsky

Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Joshua M. Kosowsky billed Medicare for 799 services in 2024

CMS data shows 799 Medicare services from Dr. Kosowsky across 11 procedure codes in 2024, for 752 Medicare patients. Medicare paid $87,086 for them.

Medicare services, 2024799
Medicare patients752
Paid by Medicare$87,086
Procedure codes11

Dr. Kosowsky's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 7892024: 7436%
Tests and treatments
2023: 352024: 376%
Imaging
2023: 182024: 196%

Where Dr. Kosowsky's Medicare services took place, 2024

  • In an office28135%
  • In a facility51865%

Dr. Kosowsky compared with the Massachusetts median for emergency medicine physicians, 2024

  • Dr. Kosowsky
  • Massachusetts median
Medicare services
799vs 3412.3 times
Medicare patients
752vs 3372.2 times
Part D claims
29vs 3619% below

Medians across 1,477 emergency medicine physicians in Massachusetts with Dmand AI profiles that report each measure.

Dr. Kosowsky's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Kosowsky

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Joshua M. Kosowsky treated 752 Medicare patients in 2024, average age 73

CMS counts 752 Medicare patients who saw Dr. Kosowsky in 2024. The largest group is 65 to 74, with 281 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% are also on Medicaid. Their average risk score is 2.08, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Kosowsky's median patient age at 66, with 57% women.

Medicare patients, 2024752
Average age73
Average risk score2.08
Also on Medicaid28%

Dr. Kosowsky's Medicare patients by age, 2024

Dr. Kosowsky's Medicare patients by sex, 2024

  • Women42757%
  • Men32543%

Chronic conditions among Dr. Kosowsky's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis53%
  4. Anxiety42%
  5. Mood disorders37%
  6. Chronic kidney disease35%
  7. Ischemic heart disease35%
  8. Depression32%

Share of Medicare patients with each condition. A patient can have several.

Dr. Kosowsky's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 66

Patient panel by sex, all payers

  • Women57%
  • Men42%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Joshua M. Kosowsky wrote 137 Medicare Part D claims in 2024

In 2024, Dr. Kosowsky wrote 137 Medicare Part D claims for 116 patients. 88% of them were for generic drugs. CMS names the drug for 29 of them, across 2 drugs with 11 or more claims each, at $129 in total drug cost. In 2022, CMS named 47 claims across 3 drugs.

Part D claims, 2024137
Drugs named by CMS2
Total drug cost$129
Part D patients116

Dr. Kosowsky's Part D claims by kind of drug, 2024

  • Generic121 claims88%
  • Brand-name16 claims12%

Dr. Kosowsky's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Kosowsky's Part D claims, 2024

  • Antibiotics36%49 of 137 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2022 to 2024

  • 2022
  • 2024
Claims for drugs CMS names
2022: 472024: 2938%

Drugs named by CMS: 2 in 2024, 3 in 2022.

See all prescribing by Dr. Kosowsky

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Joshua M. Kosowsky takes part in Medicare

Dr. Kosowsky accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Joshua M. Kosowsky has 30 publications on record

Dmand AI links 30 papers to Dr. Kosowsky, published from 2010 to 2025. 2014 was the busiest year, with 4. The most frequent topics are Emergency Service, Hospital, Chest Pain and Abdominal Pain. Dr. Kosowsky has published most often in J Emerg Med. Dr. Kosowsky's most frequent co-authors are Christopher William Baugh, MBA, MD, Marc Peter Bonaca, MD and Christian T. Ruff, MD.

Papers30
Years published2010 to 2025

Dr. Kosowsky's papers by year, 2014 to 2025

Topics Dr. Kosowsky writes about most

  • Emergency Service, Hospital
  • Chest Pain
  • Abdominal Pain
  • Acute Coronary Syndrome
  • Headache
  • Length of Stay
  • Massachusetts
  • Myocardial Infarction

Dr. Kosowsky's most frequent co-authors

Recent publications by Dr. Kosowsky

See all 30 publications and co-authors

See who Dr. Kosowsky researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kosowsky works with, so you can find a warm path to the right emergency medicine physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Joshua M. Kosowsky received $12,396 in industry payments from 2016 to 2021

CMS Open Payments shows 28 general payments to Dr. Kosowsky from 11 drug and device companies from 2016 to 2021. Consulting fees make up the largest share, 36% of the total. Sanofi and Genzyme US Companies paid the most, $4,303. It also lists 6 research payments totaling $43,175 from 2017 to 2021.

General payments to Dr. Kosowsky by program year, 2016 to 2021

General payments to Dr. Kosowsky by kind, 2016 to 2021

$12.4Kin total
  • Consulting fees$4,45036%
  • Honoraria$3,20026%
  • Speaker and faculty fees$3,06225%
  • Food and beverage$9438%
  • Travel and lodging$7416%

Companies that paid Dr. Kosowsky the most, 2016 to 2021

Share is of all general payments to this clinician.

See all payments to Dr. Kosowsky

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Joshua M. Kosowsky graduated from Harvard Medical School

Dr. Kosowsky graduated from Harvard Medical School in 1996.

  1. Medical schoolHarvard Medical School

Source: Dmand AI Professional Profile Data

Sources for Dr. Joshua M. Kosowsky's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Joshua M. Kosowsky

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Joshua M. Kosowsky's NPI number?

Dr. Joshua M. Kosowsky's NPI number is 1124085444. It was assigned on April 28, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Joshua M. Kosowsky?

Dr. Joshua M. Kosowsky is an emergency medicine physician in Boston, Massachusetts. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Joshua M. Kosowsky practice?

Dr. Kosowsky practices at 75 Francis Street, Boston, MA 02115. Dr. Kosowsky's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Kosowsky to 1 hospital, 2 medical groups and 1 hospital outpatient department.

What is Dr. Joshua M. Kosowsky's office phone number?

The practice phone on file for Dr. Kosowsky is (617) 732-5500.

What is Dr. Joshua M. Kosowsky's medical license number?

Dr. Kosowsky holds Massachusetts license 204608.

Which hospitals is Dr. Joshua M. Kosowsky affiliated with?

Dr. Kosowsky practices at Brigham and Women's Hospital in Boston, Massachusetts. Dr. Kosowsky is also affiliated with Dana-Farber Cancer Institute. Dmand AI links Dr. Kosowsky to 1 more hospital.

What medical group is Dr. Joshua M. Kosowsky part of?

Dr. Kosowsky is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Kosowsky to 2 more medical groups.

Does Dr. Joshua M. Kosowsky accept Medicare?

Yes. CMS data shows Dr. Kosowsky billed Medicare for 799 services in 2024, and Dr. Kosowsky accepts Medicare assignment.

How many Medicare patients does Dr. Joshua M. Kosowsky see?

CMS counts 752 Medicare patients who saw Dr. Kosowsky in 2024, with an average age of 73.

What services does Dr. Joshua M. Kosowsky bill to Medicare?

In 2024, Dr. Kosowsky's most billed Medicare services were emergency department visit (99285), office visit, established patient (99214) and office visit, established patient (99213).

Show 6 more questionsShow fewer questions

Where did Dr. Joshua M. Kosowsky go to medical school?

Dr. Kosowsky graduated from Harvard Medical School in 1996.

What drugs does Dr. Joshua M. Kosowsky prescribe most?

In 2024 Medicare Part D data, Dr. Kosowsky's most prescribed drugs by claims were Prednisone and Fluticasone Propionate.

Has Dr. Joshua M. Kosowsky received payments from drug or device companies?

CMS Open Payments shows $12,396 in general payments to Dr. Kosowsky from 11 companies from 2016 to 2021. The largest total came from Sanofi and Genzyme US Companies.

How long has Dr. Joshua M. Kosowsky been practicing?

Dr. Kosowsky graduated from medical school in 1996, 30 years ago.

Does Dr. Joshua M. Kosowsky do research?

Dmand AI links 30 publications to Dr. Kosowsky, published from 2010 to 2025.

Who does Dr. Joshua M. Kosowsky publish with?

Dr. Kosowsky's most frequent co-authors are Christopher William Baugh, MBA, MD (4 shared papers), Marc Peter Bonaca, MD (3 shared papers) and Christian T. Ruff, MD (3 shared papers).

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